More struct beral conversion

servers/slapd/back-ldap/add.c

servers/slapd/back-ldap/attribute.c

servers/slapd/back-ldap/back-ldap.h

servers/slapd/back-ldap/bind.c

servers/slapd/back-ldap/compare.c

servers/slapd/back-ldap/config.c

servers/slapd/back-ldap/delete.c

servers/slapd/back-ldap/group.c

servers/slapd/back-ldap/init.c

servers/slapd/back-ldap/modify.c

servers/slapd/back-ldap/modrdn.c

servers/slapd/back-ldap/search.c

servers/slapd/back-ldap/suffixmassage.c

servers/slapd/back-ldap/unbind.c